DFW v2: sometimes the right sidebar doesn't fade out in IE

[azaozz]

Happens in all IE versions. Caused by a knows bug where elements with position != static don't inherit opacity from a parent with position: static.

[azaozz]

Generally there are two ways to fix this:

• Set position: relative on the parent element (.postbox-container).
• Apply the opacity to the child elements.

It seems better to use the second option as the first interferes a bit with jQuery calculating offset().top.

[azaozz]

In 30853:

Editor, new DFW: fix fading out for the right sidebar in IE. Fixes #30714.

[azaozz]

Reopen for 4.1.

[iseulde]

Maybe only do this for IE? And leave a comment/ticket number there so we know why in the future?

[azaozz]

Yeah, was thinking to change the selectors in IE only but that makes it "messier". We will have to set the transition on the parent element (for non-IE), then negate it which is not ideal. Having different selectors in different browsers might bring inconsistencies in the future.

[markjaquith]

Is there a downside to leaving the child selectors in for all browsers? It’s not a huge number of child elements...

[azaozz]

No downside. By default there is only one child in each .postbox-container. However there are couple of actions that can be used to output other elements, hence the .postbox-container > * selector.

[johnbillion]

In 30942:

Editor, new DFW: fix fading out for the right sidebar in IE.

Merges [30853] to the 4.1 branch.

Fixes #30714.